Sander nozzle assembly



Dec. 4, i951 V. FRANTZ` 2,577,009

SANDER NOZZLE ASSEMBLY Filed Nov. l2, 1946 INVENTOR. fz L). Hmz

Patented Dec. 4, 1951 UNI TED STATES QLFEI SANDER. NozzLE .ASSEMBLYVirgil L. Frantz, Roanoke, IVal.-

Application November 12, 1.946, Serial Noeioilg i llClaims. 1

Thisinyention `,relates to. .senders ,for locomo-` tives. .and...t helike. and Lpartitfllla..rly to, sander nozzlesassemblies.

An object .of the invention is. to provide. an improved sander :nozzleassembly `by .which the sander nozzle can be connected directly to theair..pressure line without the use of .external couplings.

Another object of the. invention isv to provide an, improved nozzle lassembly having means enabling the nozzlev to be adjusted longitudinallyrelative to the body of the sand trap Without disconnecting the. ,airline. from the nozzle.`

An additional object of .the .invention is to provide .an improved;nozzle assemblyyhaving means Ior preventing sandirom contacting andimpairing the .threaded connectionsof the as sembly.

A. further object of. theinvention lis .to .provide animproved `nozzleassembly of .simplerand rugged construction long, usefullifen.

.Other objects -and advantages of therinvcntion will appearhereinafter;inthe-detailed descripv tionfbe particularly pointed out.tbe-.appended claims and illustrated in the .accompanying drawings, inwhich:

Fig. 1 .-isja :vertical .sectional :View cia sa-nd trap-,torwhich hasbeen applied .the improved nozzl assembly and Figari is. an isometric`view fof. the sealing :ring .elnllloyedi inthe assembly# Referr,in-g;Vnow indetail to ethe'fdrawillgduin whiclrfflike reference ch.a-ractorsAdesignata ke parte; the Aimproved nozzle. assemblyp for .pure poses ofillustration, has beenshown--appled :to a :sand .trap. The illustrated fsand;` trapt'. is r,of the-type employed onl'locomotives and 'the-likeand has asbody I whichisladapted to fbe. foilned asaii .integralcasting- The bodypispreierabty alici-shaped .hollow mem-berwprovidedaty:its upper-:endewitgh. a--sand'inlet port 2 ,-w.l.1ieb-ris connected bya --coupling ..3 oi any. suitable type to the usual sand dome-.notshown.A Thebody istzalsoprovided witha vclean-.out `port 4; normallyclosed-,.and one or more ysand'.outlet..ports -5 through. which. VAittissuitably Vconnected to .y a sand-outlet line, not shown, leadngto therails;

Theffpresent inventionrelates particularly-to the means bv .which an airbla-st is admittedtto thelillowinterior of the. sand trap body ,to forces andthrougn one. .oi-the sand loutletzports 5 when the sand trapis:actuated.:V 'Ihismeansltemied hereinafter. the.:sandery v-nozzl.assembly,... is

adapted `nto..:introduce a iblastgofia intotlaeebody .I through fa:nozzlepraairdnletropenlng 16,.;1. This:

2 opening positioned below the eend inlet port 2. :and directedV towardtheeand. outlet porton oi the body,.preferably at an inclination belowthe. longitudinal axis o the lower leg- 1 of.. the body.; Encircling'the outer end of .the .nozzle opening 6 and preferably integral with thebody I is a..noz.z1e seat formed as a boss or circular flange il, Theflange is provided .with 'an annular opening 8d dened by .itsCylindrical inner Well. the latter being coaxial with the onerijngg 6.Adapted to be. introduced intotne body .l through the nozzle seatopening ,8a andthe nozzle onen. ing. 6 and to be attached to the body'tlirougli thenozzle. seat. 0 is a nc z .zlev 9.. Whiletlie nozzle may beformed esV an. integral member .its f nward portion or tip. whichnormally' entendsiinto Vthe interior of the body. l .is preferably apipevhead I4 is .adapted to .be-Connected directlyto theair pressure line.For this purpose tbeeliead .isprovided with a tapered threaded .openingi5;

for receiving the end. ofthe air line, the opening being y.coaxial with.and connected. to thecentrel passage. 1.3v the shank l2.

The .nozzle isoonnected to the. body I through a:,collar` 0.1' nut I6hav-ing an outer portion or shoulder l1, which is adapted toabut-theouter 'face of the-boss 8, .and a stem or .inner por-tion [8701"reducedcrossesection wliicl'iis adapted to be inserted in the nozzle..seat opening. 8o. .The .outer `face of the stem. I8 of the collar iscylinf drical .and of substantially the same diameter as the cylindricalsea-t opening 8a, thus enabling the collarito besslidably seated inandyfreely rotated lrelative to the boss.

For locking-the collar I6 against axialoi' lon. gitlldlilitt,lv movementrelative to the boss 8 there is plQVided-azsplit snap, resilient orsprnggring 5 19. -whieh. is adapted yto seat .in an outwardly 1 racinecircumferential .groove orslet .20..iorn1ed Y. in ...h ernia for =tnecolle-r .intermediate .its 1e e 'sf ov preferably 1.' e- 'f t os sectiondpiaga .depth.;Sub-.

staat-iena teeueftoforres-.edndine dimensionof the ring. Inwardly of theouter face of the boss 8, the wall of the opening 8a is slotted toprovide an annular inwardly facing groove 2| preferably rectangular incross-section and of less depth than the depth of the ring I9. Thegroove 2l is so spaced relative to the outer face of the boss that italigns with and confronts the groove in the stem when the collar isfully seated, the shoulder II then abutting the outer face of the boss.To enable the ring to serve as an interlock between the grooves and atthe same time to permit the collar to be inserted in the seat opening8a, the ring in free condition is of substantially greater outsidediameter than the stem I8, enabling it to press against the bottom Wallof the groove 2l, and when compressed by bringing the split ends towardeach other can be confined entirely within the groove 20.

With the above construction, the stem I8, with the ring seated in thegroove 29, can be inserted lin the seat opening E by contracting thering, the ring thereafter being conned in the groove by the wall of theopening until it reaches the groove 2I. The ring then expands and, byoverlapping the joint between the collarv and the boss, locks the collaragainst outward axial movement. To insure close fit between the ring andthe groove as well as to provide frictional resistance against y Toenable rotation of the collar I5 to vary the longitudinal position ofthe nozzle 9 relative to the trap body I., the confronting faces of thestern I2 of the nozzle and the collar are desirably provided withinterlocking position-adjusting threads 22. To connect the nozzle to the'air pressure line or pipe, the latter is introduced into the taperedthreaded opening I5 in the nozzle and the nozzle is then turned eitherwith or independently of the collar to force the threaded end of thepipe into the opening, thus sealing the connection between the pipe andthe nozzle.. lIhe position of the nozzle relative to the trap body canthen be altered by holding the head of the nozzle against rotativemovement and rotating the collar in the direction required to eitherwithdraw or project the nozzle further into the body, as desired. Tofacilitate attachment of the sand trap, the nozzle will ordinarily beadjusted such that it will occupy its proper position relative to thebody when the head of the nozzle is in engagement with the outer face ofthe collar. Once the nozzle is adjusted, frictional engagement betweenthe corrugated ring 9 and the collar of the boss will prevent change ofposition of the nozzle by accidental rotation of the collar.

An important feature of this invention is the means by which sand isprevented from seeping into and wearing the adjusting threads 22 on thecollar and the nozzle. To reduce seepage through the nozzle opening to aminimum the opening is tapered toward' the interior of the body I andadapted to receive a tapered sleeve or hollow plug 23, which is designedto fit tightly into the opening. The bore of the sleeve is cylindricaland of substantially the same diameter as the outside of thel nozzleprojection or pipe I0, the sleeve thus serving as a guide for centeringthe nozzle, as well as a seal. Both sleeve and pipe are preferably madeof brass or like material to eliminate corrosion and consequent bindingor sticking in use.

outwardly of the opening B there is provided in the boss 8 a cylindricalrecess 24 of greater diameter than the collar seat opening 8a. At itsbottom, this recess is provided with a drain or outlet 25 extendingthrough to the outside of the boss. As a consequence, any sand particlesdrawn through the opening 6 on withdrawal of the nozzle, despite thewiping action of the sleeve 23, will drop into the recess 24 and beremoved from the trap through the drain 25 before they can contact theadjusting threads 22.

To exclude moisture from the engaging cylindrical surfaces of the boss 8and the collar I6, there may be provided a sealing ring 26 seating in anappropriate groove 2'I in the flange-abutting face of the collar. Tofacilitate turning of the nozzle and the collar the outer faces of boththe ead Id of the nozzle and the shoulder I'I of the collar may behexagonal or the like in section to provide the usual flat grippingsurfaces.

While normally not necessary, the construction of the nozzle assembly issuch that the parts subject to the abrading action of the sand can bereplaced. For this purpose, the pipe I0, as previously mentioned, isremovably attached to the body of the nozzle. The other exposed part,the sleeve 23, is so positioned that it can be reached through theclean-out port 4 and removed through the central opening in the collar,should its replacement be necessary.

From the above detailed description of the inventionit will be apparentthat there has been provided an improved sander nozzle assembly,particularly adapted for use in Sanders for locomotives and the like andof such construction that it can be attached to the air pressure linewithout use of external couplings. t should be under stood that thedescribed and disclosed embodiment is merely exemplary of the inventionand that all modications are intended to be included which do not departeither from the support of the invention or the scope of the appendedclaims.

Having described my invention, I claim: v

1. In a sand trap a sander nozzle assembly comprising a seat formed inthe body of said sand trap, a collar rotatably mounted in said seat,means Aassociated with said collar for locking said collar against axialmovement, and a nozzle connected to said collar and longitudinallyadjustable relative to said collar and said trap body on rotation ofsaid collar.

2. In a sand trap a sander nozzle assembly comprising a nozzle slidablyreceived in an opening in said trap, means rotatably associated withsaid trap and engaging said nozzle for moving said nozzle axiallyrelative thereto and to said trap, and means insertible in said openingand expansible therewithin for locking said collar aga-inst axialmovement.

3. In a sand trap a sander nozzle assembly comprising a nozzle slidablyreceived in an opening in said trap, means rotatably associated withsaid trap and engaging said nozzle for axially adjusting the position ofsaid nozzle relative thereto and to said trap means for locking saidrotatable mea-ns against axial movement, and means integral with saidnozzle for attaching said nozzle to an air pressure line.

4. In a sand trap in which the sand trap body is provided with an airinlet port, a nozzle adapted to be introduced into said body throughsaid port, a boss formed integrally with said body outwardly of saidport, a collar rotatably associated with said boss and engaging saidnozzle for axially adjusting said nozzle relative thereto and to saidbody, and means intermediate said base and bore for locking said collaragainst axial movement.

5. Ina sand trap a sander body having an air inlet port, a circular angeformed integrally with said body and encircling the outer end of saidport, a collar rotatably seated in said nange, means'expansible withinsaid flange for locking said collar against axial movement relative tosaid flange, and a nozzle slidably received in said port and engagingsaid collar, said nozzle being 'adjustable longitudinally, relative tosaid body on rotation of said axially locked collar.

6. Inl a sand trap a body having an air inlet port, ai boss formedintegrally with said body and having an annular opening encircling theouter? end of said port, a nozzle adapted to be introduced into saidport through said opening and a* collar rotatably seated in said openingfor adiusting said nozzle longitudinally relative to sai'dfbody, Ysaidboss having a recess intermediate said port and said opening forcatching any sand "drawn from said body through said port.

'7. a sand trap having an air inlet port, a

nozzle; .adapted to be introduced into said trap through said port, aboss formed integrally with said trap outwardly of said port having anannular yopening encircling the outer end of said port,.a collarrotatably seated in said opening' meansfor locking said collar againstaxial movement lrelative to said boss, means connecting said nozzle tosaid collar enabling said nozzle to be moved axially on rotation of saidcollar and ,means removably seated in said port for slidably receivingsaid nozzle. j

8. In a sand trap having an air inlet port, a nozzle-insertible in saidport, a boss formed on said 'trap outwardly of said port and having acylindrical opening coaxial with said port, a

collar rotatably seated in said opening, said collarv having a shoulderadapted to abut the outer face of said boss, a resilient ring seated ina circumferential groove in said collar and adapted to engage aconfronting groove formed in the inner wall of said opening, said ringand shoulder cooperating to lock said collar against axial movement,andmeans on said collar for engaging and moving said nozzle axially onrotation of said 9011s?.

9. In a sand trap having an air inlet port, a nozzle insertible in saidport, a boss formed on said trap outwardly of said port and having acylindrical opening coaxial with said port, a collar rotatably seated insaid opening, said collar having a shoulder adapted to abut the outerface of said boss, a split resilient ring adapted to seat and becompressed entirely within a circumferential groove formed in saidcollar and to engage the inner face of a confronting groove formed inthe inner wall of said opening on seating of said collar, said ring whensaid collar is seated lying in both of said grooves and locking saidcollar against outer axial movement, and means on said collar forengaging and moving said nozzle axially on rotation of said collar.

10. In a sand trap having an air inlet port, a nozzle insertible in saidport, a boss formed on said trap outwardly of said port and having acylindrical opening coaxial with said port, a collar rotatably seated insaid opening, said collar having a shoulder adapted to abut the outerface of said boss, resilient means associated with said collar and bossfor locking said collar against axial movement and means on said collarfor engaging and moving said nozzle axially on rotation of said collar.

11. In a sand trap having an air inlet port, a nozzle insertible in saidport, a boss formed on said trap outwardly of said port and having anannular opening encircling the outer end of said port, a collarrotatably seated in said opening, friction spring means within saidopening and associated with said collar and boss for locking said collaragainst axial movement and frictionally resisting rotative movement ofsaid collar, and means on said collar for engaging and mov ing saidnozzle axially on rotation of said collar.

VIRGIL L. FRANTZ.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 732,636 Hooper June 30, 19031,465,065 Stern Aug. 14, 1923 2,042,120 Palmiter May 26, 1936 2,261,565Roselle Nov. 4, 1941 2,293,129 Frantz Aug. 18, 1942 2,399,249 PerignatApr. 30, 1946

